Hammer coral LONG TENTACLES! why?

[Flipsquad81]

My hammer coral recently started stretching these long tentacles out... I'm wondering why? I have no other competing corals near it. Is this normal? Thanks for your input everyone!

 

[JustAnotherNanoTank]

Yes it’s just stretching out A “sweeper” to see what kind of room it has to grow. If it contacts something it doesn’t like they will fight or the hammer will try to grow away from it.

 

[richarddeweerd]

Yes it’s just stretching out A “sweeper” to see what kind of room it has to grow. If it contacts something it doesn’t like they will fight or the hammer will try to grow away from it.

Cool! I did see it in my tank too but i never realized why he did it.

 

[Chefwheredyougo]

Yep make sure there are no corals in the path of those. They pack a punch

 

[richarddeweerd]

He's trying to fight my anemone

 

[canadianeh]

interesting. How does it work with some people who have their tank super packed with corals and seems to be thriving? I am thinking how are the coral not stinging each other every second? If they run out of room to grow, will they simply stop growing and spreading?

 

[richarddeweerd]

There is a reason why i have a build thread open, my pets are growing out of their home

 

[JustAnotherNanoTank]

interesting. How does it work with some people who have their tank super packed with corals and seems to be thriving? I am thinking how are the coral not stinging each other every second? If they run out of room to grow, will they simply stop growing and spreading?

Some stuff will tolerate each other. Like frogspawn and hammers. Some masters of reefing know what they can get away with. Some like me are just learning as they go! Acros beat each other up really bad!